Gastec 81 乙酸检测管 CH3CO2H(1-100ppm)


Indicator: 2 to 50 ppm
Measuring Range: 
+ 1 to 2 ppm, Number of Pump Strokes 2
+ 2 to 50 ppm, Number of Pump Strokes 1
+ 50 to 100 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Pink → Yellow
Reaction Principle: CH3CO2H + Base → Reaction product
Coefficient of Variation: 10% (for 2 to 10 ppm), 5% (for 10 to 50 ppm)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

Manual tube

Performance
Measuring Range
1 to 2 ppm 2 to 50 ppm 50 to 100 ppm
Number of Pump Strokes
2 1 1/2
Correction Factor
1/2 1 2
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.2 ppm (n=2)
Colour Change Pink → Yellow
Reaction Principle CH3CO2H + Base → Reaction product
Coefficient of Variation 10% (for 2 to 10 ppm), 5% (for 10 to 50 ppm)
Shelf Life 3 Years
Corrections for temperature & humidity Humidity correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Hydrogen chloride, Hydrogen cyanide,Nitric acid 3 times or higher + Yellow
Chlorine, sulphur dioxide, Nitrogen dioxide 1/2 times or higher + Yellow
Other substance measurable with this detector tube
Substance Correction Factor No. of pump strokes Measuring Range
Acetic anhydride Factor: 0.3 1 0.6 to 15 ppm
Acrylic acid Factor: 1.0 1 2 to 50 ppm
Formic acid Factor: 2.6 1 5.2 to 130 ppm
Isovaleric acid Factor: 1.0 1 2 to 50 ppm
Maleic anhydride Factor: 0.4 1 0.8 to 20 ppm
Methacrylic acid Factor: 0.9 1 1.8 to 45 ppm
Propionic acid Factor: 1.5 1 3to 75 ppm
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
10 ppm(2014) 15 ppm(2014) -
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